What is the length of side bd?
b
13 cm
a
d
C
10 cm

12cm

Step-by-step explanation:

bc= 13cm (c) hypotenuse is always c

dc= 10÷2. (b)/(a) it can be a or b, any also long it's not the hypotenuse

= 5cm

bd= use phytagoras theorem formula

c²=a²+b²

13²=5²+b²

169=25+b²

169-25=b²

144=b²

b=

b=12

bd=12cm

160

step-by-step explanation:

idk

i hope i

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct